TSX7191ILT STMicroelectronics Integrated Circuit (SOT23 (5-Pin)) In Stock
TSX7191ILT is a low-power precision rail-to-rail operational amplifier from STMicroelectronics with a 9.0 MHz gain-bandwidth product, 16 V maximum supply, 450 µV maximum input offset voltage, and 50 pA bias current in a SOT-23-5 package. It serves precision signal conditioning, active filter, and sensor amplification applications requiring wide dynamic range on supplies up to 16 V.
- Manufacturer
- STMicroelectronics
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- TSX7191ILT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5470(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSX7191ILT?
- 9.0 MHz gain-bandwidth product enabling active filter designs up to several MHz
- 450 µV maximum input offset voltage for precision DC measurement accuracy
- 50 pA ultra-low input bias current ideal for high-impedance pH and photodiode sensors
- Rail-to-rail input and output for maximum signal swing on supplies from 2.7 V to 16 V
- 102 dB typical CMRR for superior common-mode noise rejection in differential measurements
- SOT-23-5 compact package for space-constrained portable and wearable analog front-ends
What is TSX7191ILT used for?
TSX7191ILT is designed for precision analog signal conditioning in industrial sensor front-ends, medical diagnostic instruments, and portable measurement devices that require low offset voltage and wide supply flexibility up to 16 V on a single chip. It excels in active filter stages, instrumentation buffer amplifiers, and transimpedance amplifier designs where the 9 MHz bandwidth and 50 pA bias current minimize loading on high-impedance sources such as photodiodes and electrochemical sensors. The device is also used in battery-operated IoT nodes and handheld calibrators where the compact SOT-23-5 footprint and low quiescent current enable long runtime from small battery cells.
What are the specifications of TSX7191ILT?
| Factory Lead Time | 24Weeks |
| YTEOL | 8 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0002 µA |
| Bias Current-Max (IIB) @25C | 0.00005 µA |
| Common-mode Reject Ratio-Min | 83dB |
| Common-mode Reject Ratio-Nom | 102dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 450 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | NO |
| Number of Functions | 5 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Slew Rate-Min | 1.1V/us |
| Slew Rate-Nom | 2.5V/us |
| Supply Current-Max | 1mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 4V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 7700 |
| Voltage Gain-Min | 63095 |
| Wideband | NO |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
| Country of Origin | Malaysia |
Where can I find the TSX7191ILT datasheet?
TSX7191ILT Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TSX7191ILT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How precise is the TSX7191ILT input offset voltage and how does it affect a DC sensor measurement circuit?
TSX7191ILT guarantees a maximum input offset voltage of 450 µV, which introduces a worst-case DC error of 450 µV referred to the input of an amplifier. In a signal chain amplifying a 100 mV full-scale sensor output with a gain of 10, this offset contributes a 4.5 mV output error, representing a 0.45% accuracy limitation. For applications requiring better than 0.1% accuracy, external offset trimming or a chopper-stabilized amplifier with sub-10 µV offset would be needed instead.
What supply voltage range does TSX7191ILT support, and can it operate from both 3.3 V and 12 V rails in the same design family?
TSX7191ILT operates from 2.7 V to 16 V single supply or ±1.35 V to ±8 V dual supply, making it compatible with 3.3 V microcontroller-adjacent analog stages and 12 V industrial sensor transmitter circuits in the same device family. This wide range eliminates the need for separate op-amp part numbers across product lines, simplifying BOM management for companies designing both battery-powered IoT sensors and 4-20 mA loop-powered industrial transmitters.
How does the 9 MHz gain-bandwidth product of TSX7191ILT enable active low-pass filter design at audio and instrumentation frequencies?
With a 9 MHz gain-bandwidth product, TSX7191ILT supports closed-loop gains of up to 100 V/V while maintaining 90 kHz bandwidth, or gains up to 10 V/V at 900 kHz. This makes it suitable for anti-aliasing filters in 24-bit ADC front-ends sampling at 200 kSPS or faster, and for Sallen-Key low-pass filter stages with corner frequencies up to 500 kHz at unity gain. The 9 MHz GBW exceeds that of many lower-cost precision op-amps in the same package, reducing the need for a higher-power wideband alternative.
Why is the 50 pA input bias current of TSX7191ILT important for photodiode or electrochemical sensor designs?
At 50 pA maximum input bias current, TSX7191ILT introduces a voltage error of only 50 µV when driving through a 1 MΩ feedback resistor in a transimpedance amplifier, preserving measurement accuracy for photodiode currents as small as 1 nA. Electrochemical sensors such as gas sensors and pH probes have source impedances of 10 MΩ to 1 GΩ; a 50 pA bias current causes an error of just 500 µV at 10 MΩ, which is within the noise floor of most 12-bit ADC systems and does not degrade measurement resolution.
How does TSX7191ILT compare to a standard LM324 for a precision industrial 4-20 mA transmitter design?
TSX7191ILT significantly outperforms LM324 in precision metrics: TSX7191ILT offers 450 µV maximum offset versus LM324's 7 mV typical offset, a 9 MHz GBW versus LM324's 1 MHz, and 50 pA bias current versus LM324's 45 nA. In a 4-20 mA loop transmitter with a 5 V reference, LM324's 7 mV offset alone produces a 0.14% span error, while TSX7191ILT's 450 µV offset contributes only 0.009% span error, meeting the 0.1% accuracy requirement typical of Class B industrial transmitters without external offset trim components.
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About STMicroelectronics
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.7284 | $72.84 |
| 250+ | $0.6768 | $169.21 |
| 500+ | $0.6497 | $324.83 |
| 1000+ | $0.6220 | $622.00 |
| 3000+ | $0.5860 | $1758.00 |
| 6000+ | $0.5470 | $3282.00 |
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